Sent to the delegate to indicate the authorization object has been created or changed. If you have saved a copy of the authorization object for your own purposes, you should discard it and call authorization for a new authorization object.

Returns an object that will be used as the placeholder for the binding, when a key value coding compliant property of an instance of the receiving class returns the value specified by marker, and no other placeholder has been specified.

Sets placeholder as the default placeholder for the binding, when a key value coding compliant property of an instance of the receiving class returns the value specified by marker, and no other placeholder has been specified.